Might I suggest moving the links to the "Want to Hep?” Tab of the Wiki navigation to Special:Community? Wiki navigation is primarily used by readers instead of editors. Doing this would then free up more space to pages and categories that may interest readers.
There really isn't much else, content wise that hasn't been added to the top navigation that could be added, I don't think. Might be good for the community to weigh in on.. but we have most topics covered on the navigation.